10 MM200 MOTOR MANAGEMENT SYSTEM – QUICKSTART GUIDE
OVERVIEW QUICKSTART GUIDE
Figure 14: LO and HI inputs
The full-voltage non-reversing starter type is a full voltage or across-the-line non-reversing
starter.
When a start control is received, the pre-contactor relay (if any) is picked up for the set pre-
contactor time. When the pre-contactor timer times out, relay contact output 1 closes and
seals-in, picking up contactor M, which starts the motor. When a stop control is received,
relay contact output 1 drops out, contactor M drops out, and the motor stops. The pre-
contactor is omitted on forced starts (for example, External Start).
1.1.2.2 RS485 connections
Figure 15: Typical RS485 connection
One two-wire RS485 port is provided. Up to 32 MM200 IEDs can be daisy-chained together
on a communication channel without exceeding the driver capability. For larger systems,
additional serial channels must be added. Commercially available repeaters can also be
M
-
+
A1
A2
A4
A3
A5
A6
A8
A9
A10
A7
+
-
24 VDC CONTACT INPUTS
CONTROL
POWER (VDC)
CONTROL
POWER
24 VDC
FIELD STOP
FIELD START
RESET
M
N
L
A1
A2
A4
A3
A5
A6
A8
A9
A10
L
N
VAC CONTACT INPUTS
CONTROL
POWER (VAC)
CONTROL
POWER
VAC
FIELD STOP
FIELD START
RESET
NR
LO
HI
888742A1.cdr
RETURN
NOTE: AC power and AC input wiring shown.
Connect NR to Neutral if DC power supply used.
SCADA, PLC, OR
PERSONAL COMPUTER
COM
OPTOCOUPLER
DA TA
MM200 IED
SHIELD
888745A1.CDR
UP TO 32 MM200
OR OTHER IEDs,
MAXIMUM CABLE
LENGTH OF
1200 m (4000 ft.)
LAST
DEVICE
(*) TERMINATING IMPEDANCE AT EACH END
(typically 120 ohms and 1 nF)
TWISTED PAIR
Z
T
(*)
RS485 +
RS485 -
COMMON
RS485 +
RS485 -
COMMON
IED
RS485 +
IED
RS485 -
COMMON
GROUND THE SHIELD AT THE
SCADA/PLC/COMPUTER ONLY
OR THE MM200 ONLY
DA TA
OPTOCOUPLER
Z
T
(*)
+
-
C
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